If you have several repos, or one monorepo with several packages, you probably have the same CI steps copy-pasted in many places: checkout, setup Node, install, test. When you need to change one of them, you edit every copy. GitHub Actions lets one workflow call another through the workflow_cal...
Source: [Dev.to](https://dev.to/anthany_wingo_195f7057a9e/keep-github-actions-ci-dry-with-a-reusable-workflow-56d)